WO2019047182A1

WO2019047182A1 - Wireless communication method, network device and terminal device

Info

Publication number: WO2019047182A1
Application number: PCT/CN2017/101130
Authority: WO
Inventors: 陈文洪; 张治�
Original assignee: Oppo广东移动通信有限公司
Priority date: 2017-09-08
Filing date: 2017-09-08
Publication date: 2019-03-14
Also published as: AU2017430531A1; EP3675572B1; IL273131B1; KR20220164078A; EP4061086A1; KR102472587B1; US11350464B2; KR102575922B1; CN111066353A; KR20220021027A; JP7381641B2; EP3675572A1; US20200214047A1; TWI762717B; IL273131A; JP2020537369A; CN111565466B; JP2022084855A; AU2017430531B2; KR20200045541A

Abstract

Provided in the embodiments of the present application are a wireless communication method and device, capable of improving communication performance in terms of random access. The method comprises: receiving by a network device a first random access request sent on a first uplink carrier by a terminal device; and on the basis of the first uplink carrier, sending by the network device a first random access response for the first random access request.

Description

Wireless communication method, network device and terminal device

Technical field

The present application relates to the field of communications, and more particularly to a wireless communication method, a network device, and a terminal device.

Background technique

In a Long Term Evolution (LTE) system, having a fixed uplink carrier and a fixed downlink carrier (the uplink carrier and the downlink carrier may overlap at least partially in the frequency domain), the terminal device The fixed uplink wave carrier and the downlink carrier can be separately used for uplink and downlink communication with the network, wherein the terminal can perform random access by using the fixed uplink carrier.

In future communication systems, communication performance requirements are high.

Therefore, how to improve communication performance in terms of random access is an urgent problem to be solved.

Summary of the invention

The embodiments of the present application provide a wireless communication method and device, which can improve communication performance in terms of random access.

In a first aspect, a wireless communication method is provided, including:

Receiving, by the network device, a first random access request sent by the terminal device on the first uplink carrier;

Based on the first uplink carrier, the network device transmits a first random access response for the first random access request.

Therefore, in the embodiment of the present application, the random access response is fed back based on the uplink carrier that sends the random access request, so that when there are multiple uplink carriers, the random access response may be determined as far as possible. The source of the random access request.

With reference to the first aspect, in a possible implementation manner of the first aspect, the network device sends, according to the first uplink carrier, the first random access response for the first random access request, including:

Based on the first uplink carrier, the network device determines at least one of the following:

Transmitting a resource required by the first random access response, transmitting a first random access radio network temporary identifier RA-RNTI required for the first random access response, and performing a random access request source in the first random access response Indicating information;

Transmitting the first random access response according to the determined at least one.

With reference to the first above or any one of the foregoing possible implementation manners, in another possible implementation manner of the foregoing aspect, the resource required for sending the first random response message includes: a control channel carrying the first random access response The control resource set is CORESET or search space.

In another possible implementation manner of the first aspect, the control resource set CORESET or the search space where the control channel carrying the first random access response is located is different. And a CORESET or search space in which the control channel carrying the second random access response is located; wherein the second random access response is a response to the second random access request on the second uplink carrier.

In combination with the first foregoing or any of the foregoing possible implementation manners, in another possible implementation manner of the first aspect, the calculation formula of the first RA-RATI is different from the calculation formula of the second RA-RNTI, or the first The partial parameter in the calculation formula of the RA-RATI is different from the partial parameter in the calculation formula of the second RA-RNTI; wherein the second RA-RNTI is the second for the second random access request on the second uplink carrier The RA-RNTI required for random access response.

In a second possible implementation manner of the first aspect, the information about the random access request source field of the first random access response is different from the second The information carried in the random access request source field of the random access response; wherein the second random access response is a response to the second random access request on the second uplink carrier, and the random access request source field indication The uplink carrier on which the random access request is located.

In a second possible implementation manner of the foregoing aspect, the first random access response carries a random access request source field, and the second random access response does not carry a random access request source field; wherein the second random access response is a response to a second random access request on the second uplink carrier, and the random access request source field indicates an uplink in which the random access request is located The path carrier is the first uplink carrier.

In another possible implementation manner of the first aspect, the first uplink carrier and the second uplink carrier are in different frequency bands.

In another possible implementation manner of the first aspect, the method further includes:

The network device sends configuration information to the terminal device, where the configuration information is used to indicate a resource required for the first random response message, and a determining manner or a partial parameter of the first random access wireless network temporary identifier required to send the first random response message, And at least one of the information carried by the first random access response One.

In a second aspect, a wireless communication method is provided, including:

The network device determines configuration information when performing random access for each of the plurality of uplink carriers;

The network device transmits configuration information for each uplink carrier to the terminal device.

Therefore, the network device configures configuration information for the terminal device to perform random access for each of the plurality of uplink carriers, and the terminal device can use each uplink carrier when the random access is performed. The configuration information is randomly accessed.

With reference to the second aspect, in a possible implementation manner of the second aspect, the configuration information includes a time domain resource and/or a frequency domain resource used for sending the random access request on each uplink carrier, where

The time domain resources used in transmitting the random access request on different uplink carriers and/or the RA-RNTI corresponding to the frequency domain resources are at least partially different.

With reference to the second above or any of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the configuration information when performing random access determined for different uplink carriers is at least at least One difference:

a sequence of time-frequency resources and/or random access requests occupied by the random access request;

a resource that sends a random response message;

A determination manner or a partial parameter of a random access wireless network temporary identifier that sends a random response message.

In a second possible implementation manner of the second aspect, in another possible implementation manner of the second aspect, the resource required for sending the random response message includes: a control where the control channel carrying the random access response is located Resource set CORESET or search space.

With reference to the second above or any of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the control channel of the random access response corresponding to the random access request on different uplink carriers is The CORESET or search space is different.

With reference to the second above or any of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the RA-RNTI of the random access response corresponding to the random access request on different uplink carriers The calculation formulas are different or the calculation parameters are different in some parameters.

With reference to the second above or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the configuration information includes a configuration for: randomizing each uplink carrier transmission An indication of the source of the random access request in the random access response corresponding to the access request.

With reference to the second above or any of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, random access of the random access response corresponding to the random access request on different uplink carriers The information carried in the request source field is different; wherein the random access request source field indicates the uplink carrier where the random access request is located.

With reference to the second above or any one of the foregoing possible implementation manners, in another possible implementation manner of the second aspect, the multiple uplink carriers include a first uplink carrier and a second uplink carrier, A random access response carries a random access request source field, and the second random access response does not carry a random access request source field; wherein the first random access response is for the first random access on the first uplink carrier In response to the request, the second random access response is a response to a second random access request on the second uplink carrier, and the random access request source field indicates that the uplink carrier on which the random access request is located is An uplink carrier.

In a second possible implementation manner of the second aspect, in another possible implementation manner of the second aspect, the multiple uplink carriers are in different frequency bands.

In a third aspect, a wireless communication method is provided, including:

The terminal device sends a first random access request to the network device on the first uplink carrier;

Based on the first uplink carrier, the terminal device acquires a first random access response sent by the network device for the first random access request.

With reference to the third aspect, in a possible implementation manner of the third aspect, the terminal device acquires, according to the first uplink carrier, the first random access response that is sent by the network device for the first random access request, and includes:

Based on the first uplink carrier, the terminal device determines at least one of the following:

a resource occupied by the first random access response, a first random access radio network temporary identifier RA-RNTI of the first random access response, and information indicating a source of the random access request in the first random access response;

Acquiring the first random access response according to the determined at least one.

With reference to the third above or any one of the foregoing possible implementation manners, in another possible implementation manner of the foregoing aspect, the resource occupied by the first random response message includes: the control channel carrying the first random access response is located CORESET or search space.

With reference to the third above or any of the foregoing possible implementation manners, in another possible implementation manner of the third aspect, the control resource set where the control channel carrying the first random access response is located a CORESET or search space, different from the CORESET or search space in which the control channel carrying the second random access response is located; wherein the second random access response is for the second random access request on the second uplink carrier response.

With reference to the third above or any of the foregoing possible implementation manners, in another possible implementation manner of the third aspect, the calculation formula of the first RA-RATI is different from the calculation formula of the second RA-RNTI, or the first The partial parameter in the calculation formula of the RA-RATI is different from the partial parameter in the calculation formula of the second RA-RNTI; wherein the second RA-RNTI is the second for the second random access request on the second uplink carrier The RA-RNTI required for random access response.

With reference to the third above or any one of the foregoing possible implementation manners, in another possible implementation manner of the third aspect, the information of the random access request source field of the first random access response is different from the second The information carried in the random access request source field of the random access response; wherein the second random access response is a response to the second random access request on the second uplink carrier, and the random access request source field indication The uplink carrier on which the random access request is located.

In conjunction with the third or the foregoing possible implementation manner, in another possible implementation manner of the foregoing aspect, the first random access response carries a random access request source field, and the second random access response does not carry a random access request source field; wherein the second random access response is a response to a second random access request on the second uplink carrier, and the random access request source field indicates an uplink in which the random access request is located The path carrier is the first uplink carrier.

In another possible implementation manner of the third aspect, the first uplink carrier is different from the frequency band in which the second uplink carrier is located.

In conjunction with the third above or any of the foregoing possible implementation manners, in another possible implementation manner of the third aspect, the method further includes:

The terminal device receives the configuration information sent by the network device, where the configuration information is used to indicate the resource occupied by the first random access response, and the determining manner or part of the first random access wireless network temporary identifier RA-RNTI of the first random access response The parameter, and at least one of the information carried by the first random access response.

A fourth aspect provides a wireless communication method, where the method further includes:

Receiving, by the terminal device, configuration information when the network device randomly accesses each of the plurality of uplink carriers;

According to the configuration information, at least part of the uplink carriers of the plurality of uplink carriers are randomly accessed.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the configuration information includes a time domain resource and/or a frequency used for sending a random access request on each uplink carrier of the multiple uplink carriers. Domain resources; among them,

With reference to the fourth aspect, in another possible implementation manner of the fourth aspect, the configuration information when performing random access determined for different uplink carriers is different in at least one of the following:

a resource that sends a random response message;

With reference to the fourth above or any one of the foregoing possible implementation manners, in another possible implementation manner of the foregoing aspect, the resource required for sending the random response message includes: a CORESET where the control channel carrying the random access response is located Or search space.

With reference to the fourth above or any one of the foregoing possible implementation manners, in another possible implementation manner of the fourth aspect, the control channel of the random access response corresponding to the random access request on different uplink carriers is The collection of control resources is different from CORESET or search space.

With reference to the fourth above or any of the foregoing possible implementation manners, in another possible implementation manner of the fourth aspect, the RA-RNTI of the random access response corresponding to the random access request on different uplink carriers The calculation formulas are different or the calculation parameters are different in some parameters.

With reference to the fourth above or any one of the foregoing possible implementation manners, in another possible implementation manner of the foregoing aspect, the configuration information includes: a configuration corresponding to: a random access request for each uplink carrier transmission An indication of the source of the random access request in the random access response.

With reference to the fourth above or any of the foregoing possible implementation manners, in another possible implementation manner of the fourth aspect, random access of the random access response corresponding to the random access request on different uplink carriers The information carried in the request source field is different; wherein the random access request source field indicates the uplink carrier where the random access request is located.

In conjunction with the fourth above or any one of the foregoing possible implementation manners, in another possible implementation manner of the fourth aspect, the multiple uplink carriers include a first uplink carrier and a second uplink carrier, A random access response carries a random access request source field, and the second random access response does not carry a random access request source field; wherein the first random access response is for the first uplink a response of the first random access request on the wave, the second random access response is a response to the second random access request on the second uplink carrier, and the random access request source field indicates where the random access request is located The uplink carrier is the first uplink carrier.

In conjunction with the fourth above or any of the foregoing possible implementation manners, in another possible implementation manner of the fourth aspect, the multiple uplink carriers are respectively in different frequency bands.

In a fifth aspect, a network device is provided for performing any of the above-mentioned first aspect or any possible implementation of the first aspect or the method of any of the second or second aspect. In particular, the network device comprises functional modules for performing any of the above-described first aspect or any possible implementation of the first aspect or the method of any of the second or second aspects of the second aspect.

In a sixth aspect, a terminal device is provided for performing any of the foregoing possible implementations of the third aspect or the third aspect or the method of any of the fourth or fourth aspect. In particular, the terminal device comprises functional modules for performing any of the possible implementations of the second aspect or the second aspect described above or the method of any of the fourth or fourth aspects of the fourth aspect.

In a seventh aspect, a network device is provided, including a processor, a memory, and a transceiver. The processor, the memory, and the transceiver communicate with each other through an internal connection path, transmitting control and/or data signals, such that the network device performs the first aspect or any possible implementation of the first aspect Or the method of any of the third aspect or any possible implementation of the third aspect.

In an eighth aspect, a terminal device is provided, including a processor, a memory, and a transceiver. The processor, the memory, and the transceiver communicate with each other through an internal connection path, transmitting control and/or data signals, such that the network device performs any of the second or second aspects of the foregoing possible implementations Or the method of any of the fourth aspect or any possible implementation of the fourth aspect.

In a ninth aspect, a computer readable medium is provided for storing a computer program, the computer program comprising instructions for performing any one of the methods described above or any possible implementation.

In a tenth aspect, a computer program product comprising instructions, when executed on a computer, causes the computer to perform the method of any one of the above methods or any of the possible implementations.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description For some embodiments of the present application, other drawings may be obtained from those skilled in the art without departing from the drawings.

FIG. 1 is a schematic diagram of a wireless communication system in accordance with an embodiment of the present application.

2 is a schematic diagram of a link carrier in terms of resource allocation according to an embodiment of the present application.

FIG. 3 is a schematic diagram of a link carrier in terms of resource allocation according to an embodiment of the present application.

FIG. 4 is a schematic diagram of a link carrier in terms of resource allocation according to an embodiment of the present application.

FIG. 5 is a schematic diagram of a link carrier in terms of resource allocation according to an embodiment of the present application.

FIG. 6 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.

FIG. 7 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.

FIG. 8 is a schematic block diagram of a network device according to an embodiment of the present application.

9 is a schematic block diagram of a network device in accordance with an embodiment of the present application.

FIG. 10 is a schematic block diagram of a terminal device according to an embodiment of the present application.

FIG. 11 is a schematic block diagram of a terminal device according to an embodiment of the present application.

FIG. 12 is a schematic block diagram of a system chip in accordance with an embodiment of the present application.

FIG. 13 is a schematic block diagram of a communication device in accordance with an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application are described in conjunction with the accompanying drawings in the embodiments of the present application. It is obvious that the described embodiments are a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The technical solution of the embodiment of the present application can be applied to various communication systems, for example, Global System of Mobile communication ("GSM") system, Code Division Multiple Access (CDMA). System, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service ("GPRS"), Long Term Evolution (Long Term Evolution, referred to as "Long Term Evolution" LTE") system, LTE Frequency Division Duplex ("FDD") system, LTE Time Division Duplex ("TDD"), Universal Mobile Telecommunication System (Universal Mobile Telecommunication System) "UMTS"), Worldwide Interoperability for Microwave Access (WiMAX) communication system or future 5G system (also available) It is called New Radio (NR) system and so on.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

FIG. 1 shows a wireless communication system 100 to which an embodiment of the present application is applied.

It should be understood that FIG. 1 exemplarily shows one network device and two terminal devices. Alternatively, the wireless communication system 100 may include multiple network devices and may include other numbers of terminals within the coverage of each network device. The device is not limited in this embodiment.

Optionally, the wireless communication system 100 may further include other network entities, such as a network controller, a mobility management entity, and the like.

As shown in FIG. 1, the wireless communication system 100 can include a network device 110. Network device 100 can be a device that communicates with a terminal device. Network device 100 may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within the coverage area. Optionally, the network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or may be a base station (NodeB, NB) in a WCDMA system, or may be an evolved base station in an LTE system. (Evolutional Node B, eNB or eNodeB), or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, A network side device in a future 5G network or a network device in a publicly available Public Land Mobile Network (PLMN) in the future.

The wireless communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110. Terminal device 120 can be mobile or fixed. Optionally, the terminal device 120 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless communication. Device, user agent, or user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication. Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, or future evolutionary Terminal equipment in PLMN, etc.

Optionally, device to device (D2D) communication can be performed between the terminal devices 120.

Alternatively, the 5G system or network may also be referred to as a New Radio (NR) system or network.

The high frequency band is an important candidate for deploying 5G (NR) networks. Due to the higher frequency band, the coverage is limited (compared to low frequency LTE). For the downlink (DL), the coverage of the DL is improved due to the large transmission power of the network device and the Multiple Input Multiple Output (MIMO) (hybrid beamforming). Due to the limited transmit power of the terminal equipment, UL coverage will become a bottleneck.

Therefore, an Uplink (UL) carrier can be deployed at low frequencies for NR transmission, which can be referred to as a Supplemental Uplink (SUL) carrier. Thus NR has at least 2 UL carriers, one is a SUL carrier and the other is a high frequency UL carrier (which may be referred to as NR dedicated UL).

For example, as shown in Figures 2 and 3, the NR system can include a high frequency UL carrier in frequency band f0 and a low frequency UL carrier in frequency band f1.

Wherein, as shown in FIG. 2, the high frequency UL carrier in the frequency band f0 and the high frequency DL carrier frequency division multiplexing (FDD) in the frequency band f0, or, as shown in FIG. 3, are in the frequency band. The high frequency UL carrier of f0 is time division multiplexed (TDD) with the high frequency DL carrier in frequency band f1.

Optionally, the SUL carrier can also share spectrum resources with the LTE system, that is, on f1, only some resources can be used by the NR, and other resources are used for LTE. The resource sharing may be a Frequency Division Multiplexing (FDM) or a Time Division Multiplexing (TDM) method (for example, a TDM method as shown in FIGS. 4 and 5).

It should be understood that although the above description is made by taking two UL carriers in the NR system as an example, the embodiment of the present application is not limited thereto. For example, the NR system may also have three or more UL carriers.

It should also be understood that, in the embodiment of the present application, multiple UL carriers included in the NR system may be used for uplink transmission by the terminal device, but in configuration, only the terminal device may be configured to use a partial UL carrier for uplink transmission.

Optionally, the network device configures the number of UL carriers used by the terminal device and which one The UL carrier can be dynamically changed.

Optionally, after the terminal device initiates the PRACH preamble, a random access request (RAR) of the network device is monitored at the corresponding location. The network device sends a random access response by using a Random Access Radio Network Temporary Identity (RA-RNTI), and the terminal device uses the same TA-RNTI to receive the random access response.

In an LTE system, the RA-RNTI can be calculated in the following three ways.

In one mode, RA-RNTI=1+t_id+10*f_id Equation 1

The t_id is an index of the first subframe of the designated PRACH resource, and the f_id is an index of the PRACH specified by the subframe in the frequency domain increasing order.

In another way,

RA-RNTI=1+t_id+10*f_id+60*(SFN_id mod(Wmax/10)) Equation 2

The t_id is the index of the first subframe of the designated PRACH resource, and the f_id is the index of the PRACH specified by the subframe in the frequency domain ascending order. The SFN_id is the index of the first radio frame of the designated PRACH resource, and the Wmax is 400.

In another implementation, RA-RNTI=1+floor(SFN_id/4) Equation 3

The SFN_id is an index of the first radio frame of the designated PRACH resource.

It should be understood that the foregoing manner of obtaining the RA-RNTI is only a few implementation manners, and other implementation manners may exist in the embodiment of the present application.

In the NR system, the manner of acquiring the RA-RNTI may be the same as or different from the manner of acquiring the RA-RNTI in the LTE system.

If two terminal devices respectively send random access requests (including random access codes, ie random access preambles) from the NR dedicated UL carrier and the SUL carrier, it is possible that two terminal devices receive the same RAR. It is impossible to distinguish which preamble is sent on which UL carrier.

Therefore, for the scenario in which multiple uplink carriers exist, the following embodiments provide the following solutions for random access.

FIG. 6 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. The method 200 is optionally applicable to the system shown in FIG. 1, but is not limited thereto. The method 200 includes at least some of the following.

In 210, the terminal device sends the first random connection to the network device on the first uplink carrier. Into the request.

In 220, the network device receives a first random access request sent by the terminal device on the first uplink carrier.

In 230, based on the first uplink carrier, the network device sends a first random access response for the first random access request.

In 240, based on the first uplink carrier, the terminal device acquires a first random access response sent by the network device for the first random access request.

Optionally, based on the first uplink carrier, the network device determines at least one of: a resource required to send the first random access response, and a first required to send the first random access response And the random access wireless network temporary identifier RA-RNTI, and the information indicating the source of the random access request in the first random access response; and sending the first random access response according to the determined at least one. Correspondingly, based on the first uplink carrier, the terminal device determines at least one of the following: a resource occupied by the first random access response, and a first random access wireless network temporary of the first random access response And identifying the RA-RNTI, and the information indicating the source of the random access request in the first random access response; acquiring the first random access response according to the determined at least one type.

Optionally, the network device sends configuration information to the terminal device, where the configuration information is used to indicate a resource required for sending the first random response message, and the first random access wireless network required to send the first random response message a determination manner or part of parameters of the temporary identifier, and at least one of information carried by the first random access response (ie, information indicating an indication of a source of the random access request).

It should be understood that the resource required for sending the first random response message, the determining manner or partial parameter of the first random access wireless network temporary identifier required to send the first random response message, and the first random access response station The information carried can also be preset on the terminal device without the configuration of the network device.

Optionally, in the embodiment of the present application, the resource required to send the first random response message that is determined based on the first uplink carrier includes: a control resource set in which the control channel carrying the first random access response is located CORESET or search space.

Optionally, the Control Resource Set (CORESET) or the Search Space (Control Space) where the control channel carrying the first random access response is located is different from the The CORESET or search space in which the control channel carrying the second random access response is located; wherein the second random access response is a response to the second random access request on the second uplink carrier.

Specifically, after the UE transmits a physical random access channel (PRACH) preamble, the UE needs to monitor a random access response (RAR) of the network. In NR, the reception of the random access response requires the detection of a control channel (NR-PDCCH). The network device performs different configurations on the control channel, so that different preambles are sent on different ULs to detect different control channels. Some specific configuration options are as follows:

In one mode, CORESET 1 or CORESET group 1 (ie, including multiple CORESETs) is used for control channel resources of RAR reception corresponding to preamble transmitted on NR dedicated UL; CORESET 2 or CORESET group 2 (ie, including multiple CORESETs) Control channel resources received by the preamble corresponding to the preamble transmitted on the NR SUL

In another mode, the search space 1 is used for the control channel resource of the RAR received by the preamble transmitted on the NR dedicated UL; and the search space 2 is used for the control channel resource of the RAR received by the preamble transmitted on the NR SUL.

Optionally, the information carried in the random access request source field of the first random access response is different from the information carried in the random access request source field of the second random access response; wherein the second random access The incoming response is a response to a second random access request on the second uplink carrier, the random access request source field indicating the uplink carrier on which the random access request is located.

Specifically, the network device carries information in the random access response to indicate which UL link the random access request belongs to. For example, the RAR indicates that the random access request is for an NR dedicated UL link or a SUL link.

Optionally, the first random access response carries a random access request source field, and the second random access response does not carry a random access request source field; wherein the second random access response is for the second uplink A response of the second random access request on the carrier, the random access request source field indicating that the uplink carrier where the random access request is located is the first uplink carrier.

Specifically, the network device carries information in the random access response to indicate which UL link the random access request belongs to. For example, the RAR does not indicate which UL link the random access request belongs to, corresponding to the default UL link (eg, NR dedicated UL link), if indicated by the indicated UL link (eg, SUL link) ).

Optionally, in the embodiment of the present application, the first uplink carrier and the second The frequency bands in which the line link carriers are located are different. For example, the first uplink carrier is the SUL carrier mentioned in Figures 2-5, and the second uplink carrier is the dedicated UL carrier mentioned in Figures 2-5.

Optionally, the calculation formula of the first RA-RATI is different from the calculation formula of the second RA-RNTI, or part of the calculation formula of the first RA-RATI is different from the part of the calculation formula of the second RA-RNTI a parameter; wherein the second RA-RNTI is an RA-RNTI required for a second random access response for a second random access request on the second uplink carrier.

Specifically, after the UE transmits the PRACH preamble, the UE needs to monitor the random access response (RAR) of the network. In NR, the reception of the random access response requires the detection of a control channel (NR-PDCCH). The transmission of the control channel is scrambled by the RA-RNTI. The different RAAs can be distinguished by different RA-RNTIs. For the case of random access supporting SUL, an extra item may be introduced in the formula of the RA-RNTI compared to the dedicated UL carrier, which is associated with the SUL, so as to avoid the RA corresponding to the preamble on the two ULs. -RNTI is the same. For example, when there is no SUL, the range of RA-RNTI is [x y] (y>x>=0). For the preamble transmitted on the SUL, the calculation of the RA-RNTI can add a Z(Z>y) to the previous technology, so that the RA-RNTI corresponding to the two ULs can be avoided.

For example, for a dedicated UL carrier, the formula for calculating the RA-RNTI may be Equation 1, Equation 1, or Equation 3 above, and then Z may be added to Equation 1, Equation 2, and Equation 3 respectively as a formula for calculating the SUL carrier.

Of course, Z can also be no larger than y, so that RA-RNTI cannot be completely avoided, but the same probability can be reduced.

FIG. 7 is a schematic flowchart of a wireless communication method 300 according to an embodiment of the present application. The method 300 includes at least a portion of the following.

In 310, the network device determines configuration information for random access for each of the plurality of uplink carriers.

Optionally, the frequency bands of the multiple uplink carriers are different.

At 320, the network device transmits the configuration information for each of the uplink carriers to the terminal device.

In 330, the terminal device receives configuration information when the network device performs random access for each of the plurality of uplink carriers;

In 340, according to the configuration information, at least part of the uplink carriers in the plurality of uplink carriers are randomly accessed.

Optionally, the configuration information includes a time domain resource and/or a frequency domain resource used by the random access request on each uplink carrier, where the random access request is sent on different uplink carriers. The RA-RNTI corresponding to the time domain resource and/or the frequency domain resource is at least partially different.

Specifically, the network device coordinates the time-frequency and/or frequency-domain resources of the RACH when configuring the random access channel (RACH) resources corresponding to the different UL links, and avoids the RA corresponding to the preamble on the two UL carriers. - RNTI creates a collision or reduces the probability of collision.

Optionally, the configuration information when performing random access respectively determined for different uplink carriers is different in at least one of the following:

a resource that sends a random response message;

Optionally, the resource required to send the random response message includes: a control resource set CORESET or a search space in which the control channel carrying the random access response is located.

Optionally, the control channel of the random access response corresponding to the random access request on different uplink carriers is different in CORESET or search space.

Optionally, the calculation formula of the RA-RNTI of the random access response corresponding to the random access request on different uplink carriers is different or some parameters in the calculation formula are different.

Optionally, the configuration information includes an indication of a random access request source in the random access response corresponding to the random access request of each uplink carrier transmission.

Optionally, the random access request source field corresponding to the random access response corresponding to the random access request on the different uplink carriers carries different information; wherein the random access request source field indicates the random access request The uplink carrier at the location.

Optionally, the multiple uplink carriers include a first uplink carrier and a second uplink carrier, where the first random access response carries a random access request source field, and the second random access response does not carry a random connection. a request source field; wherein the first random access response is a response to a first random access request on a first uplink carrier, the second random access response is for a second uplink carrier a response of the second random access request, the random access request source field indicating random access The uplink carrier in which the incoming request is located is the first uplink carrier.

It should be understood that the descriptions of the method 200 and the method 300 can be referred to each other, and the method 200 and the method 300 can be used in combination, and for brevity, no further details are provided herein.

FIG. 8 is a schematic block diagram of a network device 400 in accordance with an embodiment of the present application. The network device 400 includes a receiving unit and a transmitting unit as shown in FIG.

The receiving unit 410 is configured to receive a first random access request that is sent by the terminal device on the first uplink carrier, where the sending unit 420 is configured to: according to the first uplink carrier, The first random access request sends a first random access response.

It should be understood that the network device 400 can perform corresponding operations performed by the network device in the foregoing method 200, and details are not described herein for brevity.

FIG. 9 is a schematic block diagram of a network device 500 in accordance with an embodiment of the present application. As shown in FIG. 9, the network device 500 includes a processing unit 510 and a communication unit 520;

The processing unit 510 is configured to: determine, for each uplink carrier of the multiple uplink carriers, configuration information when performing random access, respectively;

The communication unit 520 is configured to: send the configuration information for each uplink carrier to a terminal device.

It should be understood that the network device 500 can perform corresponding operations performed by the network device in the foregoing method 300. For brevity, details are not described herein again.

FIG. 10 is a schematic block diagram of a terminal device 600 according to an embodiment of the present application. As shown in FIG. 10, the terminal device 600 includes a sending unit 610 and a receiving unit 620;

The sending unit 610 is configured to: send a first random access request to the network device on the first uplink carrier; the receiving unit 620 is configured to: acquire the network device based on the first uplink carrier a first random access response sent for the first random access request.

It should be understood that the terminal device 600 can perform the corresponding operations performed by the terminal device in the foregoing method 200, and details are not described herein for brevity.

FIG. 11 is a schematic block diagram of a terminal device 700 according to an embodiment of the present application. As shown in Figure 11, the terminal device 700 includes a receiving unit 710 and an access unit 720;

The receiving unit 710 is configured to: receive configuration information when the network device performs random access for each uplink carrier of the multiple uplink carriers; the access unit 720 is configured to: according to the configuration information, At least a portion of the uplink carriers of the plurality of uplink carriers are randomly accessed.

It should be understood that the terminal device 700 can perform the corresponding operations performed by the terminal device in the foregoing method 300, and details are not described herein for brevity.

FIG. 12 is a schematic structural diagram of a system chip 800 according to an embodiment of the present application. The system chip 800 of FIG. 12 includes an input interface 801, an output interface 802, the processor 803, and a memory 804 that can be connected by an internal communication connection line. The processor 803 is configured to execute code in the memory 804.

Optionally, when the code is executed, the processor 803 implements a method performed by a network device in a method embodiment. For the sake of brevity, it will not be repeated here.

Alternatively, when the code is executed, the processor 803 implements a method performed by the terminal device in the method embodiment. For the sake of brevity, it will not be repeated here.

FIG. 13 is a schematic block diagram of a communication device 900 in accordance with an embodiment of the present application. As shown in FIG. 13, the communication device 900 includes a processor 910 and a memory 920. The memory 920 can store program code, and the processor 910 can execute the program code stored in the memory 920.

Alternatively, as shown in FIG. 13, the communication device 900 can include a transceiver 930 that can control the transceiver 930 to communicate externally.

Optionally, the processor 910 can call the program code stored in the memory 920 to perform the corresponding operations of the network device in the method embodiment. For brevity, no further details are provided herein.

Optionally, the processor 910 can call the program code stored in the memory 920 to perform the corresponding operations of the terminal device in the method embodiment. For brevity, details are not described herein again.

It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the foregoing method embodiments may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.

It is to be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory. The volatile memory can be a Random Access Memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Connection Dynamic Random Access Memory (SDRAM) And direct memory bus random access memory (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling through some interface, device or unit. Or a communication connection, which may be in electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

A wireless communication method, comprising:

Receiving, by the network device, a first random access request sent by the terminal device on the first uplink carrier;

Based on the first uplink carrier, the network device sends a first random access response for the first random access request.
The method according to claim 1, wherein the transmitting, by the network device, the first random access response for the first random access request, based on the first uplink carrier, includes:

Based on the first uplink carrier, the network device determines at least one of the following:

Transmitting, by the resource required by the first random access response, the first random access radio network temporary identifier RA-RNTI required to send the first random access response, and the first random access response Information indicating the source of the random access request;

And transmitting the first random access response according to the determined at least one.
The method according to claim 2, wherein the resource required to send the first random response message comprises: a control resource set CORESET or a search space in which the control channel carrying the first random access response is located.
The method according to claim 3, wherein the control resource set CORESET or search space in which the control channel carrying the first random access response is located is different from the control channel carrying the second random access response. a CORESET or search space; wherein the second random access response is a response to a second random access request on the second uplink carrier.
The method according to any one of claims 2 to 4, wherein the calculation formula of the first RA-RATI is different from the calculation formula of the second RA-RNTI, or the calculation formula of the first RA-RATI Part of the parameter is different from a partial parameter in a calculation formula of the second RA-RNTI; wherein the second RA-RNTI is a second random access response for the second random access request on the second uplink carrier Required RA-RNTI.
The method according to any one of claims 2 to 5, wherein the information carried in the random access request source field of the first random access response is different from the random access of the second random access response. Information carried in the incoming request source field; wherein the second random access response is a response to a second random access request on the second uplink carrier, the random access request source field indicating random access The uplink carrier on which the request is located.
Method according to any one of claims 2 to 5, wherein said first The random access response carries a random access request source field, and the second random access response does not carry a random access request source field; wherein the second random access response is for a second random on the second uplink carrier In response to the access request, the random access request source field indicates that the uplink carrier on which the random access request is located is the first uplink carrier.
The method according to any one of claims 2 to 7, wherein the first uplink carrier is different from the frequency band in which the second uplink carrier is located.
The method according to any one of claims 2 to 8, wherein the method further comprises:

The network device sends configuration information to the terminal device, where the configuration information is used to indicate a resource required to send the first random response message, and the first random access wireless required to send the first random response message At least one of a determining manner or a part of parameters of the network temporary identifier and information carried by the first random access response.
A wireless communication method, comprising:

The network device determines configuration information when performing random access for each of the plurality of uplink carriers;

The network device transmits the configuration information for each of the uplink carriers to a terminal device.
The method according to claim 10, wherein the configuration information comprises a time domain resource and/or a frequency domain resource used by the random access request on each uplink carrier;

The time domain resources used in transmitting the random access request on different uplink carriers and/or the RA-RNTI corresponding to the frequency domain resources are at least partially different.
The method according to claim 10 or 11, wherein the configuration information when performing random access respectively determined for different uplink carriers is different in at least one of the following:

a sequence of time-frequency resources and/or random access requests occupied by the random access request;

a resource that sends a random response message;

A determination manner or a partial parameter of a random access wireless network temporary identifier that sends a random response message.
The method according to claim 12, wherein the resource required to send the random response message comprises: a control resource set CORESET or a search space in which the control channel carrying the random access response is located.
The method according to claim 13, wherein the control channel of the random access response corresponding to the random access request on the different uplink carriers is different in CORESET or search space.
The method according to any one of claims 12 to 14, wherein the calculation formula of the RA-RNTI of the random access response corresponding to the random access request on different uplink carriers is different or in the calculation formula Some parameters are different.
The method according to any one of claims 10 to 15, wherein the configuration information comprises: a random access response corresponding to the random access request of each uplink carrier transmission An indication of the source of the random access request.
The method according to claim 16, wherein the random access request source field corresponding to the random access response on the different uplink carriers carries different information; wherein the random access The Incoming Request Source field indicates the uplink carrier on which the random access request is located.
The method according to claim 16, wherein the plurality of uplink carriers comprise a first uplink carrier and a second uplink carrier, and the first random access response carries a random access request source field, The second random access response does not carry a random access request source field; wherein the first random access response is a response to a first random access request on the first uplink carrier, and the second random access The incoming response is a response to a second random access request on the second uplink carrier, the random access request source field indicating that the uplink carrier on which the random access request is located is the first uplink carrier .
The method according to any one of claims 10 to 18, characterized in that the frequency bands in which the plurality of uplink carriers are located are different.
A wireless communication method, comprising:

The terminal device sends a first random access request to the network device on the first uplink carrier;

And the terminal device acquires, according to the first uplink carrier, a first random access response that is sent by the network device for the first random access request.
The method according to claim 20, wherein the terminal device acquires, according to the first uplink carrier, the first random access that the network device sends for the first random access request Response, including:

Based on the first uplink carrier, the terminal device determines at least one of the following:

The resource occupied by the first random access response, the first random of the first random access response Accessing a radio network temporary identifier RA-RNTI, and information indicating a source of the random access request in the first random access response;

And acquiring the first random access response according to the determined at least one.
The method according to claim 21, wherein the resource occupied by the first random response message comprises: a CORESET or a search space in which a control channel carrying the first random access response is located.
The method according to claim 22, wherein the control resource set CORESET or search space in which the control channel carrying the first random access response is located is different from the control channel carrying the second random access response. a CORESET or search space; wherein the second random access response is a response to a second random access request on the second uplink carrier.
The method according to any one of claims 21 to 23, wherein the calculation formula of the first RA-RATI is different from the calculation formula of the second RA-RNTI, or the calculation formula of the first RA-RATI Part of the parameter is different from a partial parameter in a calculation formula of the second RA-RNTI; wherein the second RA-RNTI is a second random access response for the second random access request on the second uplink carrier Required RA-RNTI.
The method according to any one of claims 21 to 24, wherein the information carried in the random access request source field of the first random access response is different from the random access of the second random access response. Information carried in the incoming request source field; wherein the second random access response is a response to a second random access request on the second uplink carrier, the random access request source field indicating random access The uplink carrier on which the request is located.
The method according to any one of claims 21 to 24, wherein the first random access response carries a random access request source field, and the second random access response does not carry a random access request source field; The second random access response is a response to a second random access request on the second uplink carrier, where the random access request source field indicates that the uplink carrier where the random access request is located is The first uplink carrier.
The method according to any one of claims 21 to 26, wherein the first uplink carrier is different from the frequency band in which the second uplink carrier is located.
The method according to any one of claims 21 to 27, further comprising:

The terminal device receives the configuration information sent by the network device, where the configuration information is used to indicate that the resource occupied by the first random access response is sent, and the first random access response is first And determining at least one of a determining manner or a part of parameters of the radio network temporary identifier RA-RNTI and information carried by the first random access response.
A wireless communication method, the method further comprising:

Receiving, by the terminal device, configuration information when the network device randomly accesses each of the plurality of uplink carriers;

According to the configuration information, at least part of the uplink carriers of the plurality of uplink carriers perform random access.
The method according to claim 29, wherein said configuration information comprises a time domain resource and/or a frequency domain used for transmitting a random access request on each of said plurality of uplink carriers Resources; among them,

The time domain resources used in transmitting the random access request on different uplink carriers and/or the RA-RNTI corresponding to the frequency domain resources are at least partially different.
The method according to claim 29 or 30, wherein the configuration information when performing random access respectively determined for different uplink carriers is different in at least one of the following:

a sequence of time-frequency resources and/or random access requests occupied by the random access request;

a resource that sends a random response message;

A determination manner or a partial parameter of a random access wireless network temporary identifier that sends a random response message.
The method according to claim 31, wherein the resource required to transmit the random response message comprises: a CORESET or a search space in which a control channel carrying the random access response is located.
The method according to claim 32, wherein the control resource set CORESET or the search space in which the random access response corresponding to the random access request on the different uplink carriers is located is different.
The method according to any one of claims 31 to 33, wherein the calculation formula of the RA-RNTI of the random access response corresponding to the random access request on different uplink carriers is different or in the calculation formula Some parameters are different.
The method according to any one of claims 29 to 34, wherein the configuration information comprises: a random access response corresponding to the random access request of each uplink carrier transmission An indication of the source of the random access request.
Method according to claim 35, characterized in that different uplink carriers The random access request source field corresponding to the random access request corresponding to the random access request carries different information; wherein the random access request source field indicates an uplink carrier where the random access request is located.
The method according to claim 35, wherein the plurality of uplink carriers comprise a first uplink carrier and a second uplink carrier, and the first random access response carries a random access request source field, The second random access response does not carry a random access request source field; wherein the first random access response is a response to a first random access request on the first uplink carrier, and the second random access The incoming response is a response to a second random access request on the second uplink carrier, the random access request source field indicating that the uplink carrier on which the random access request is located is the first uplink carrier .
The method according to any one of claims 29 to 37, characterized in that the frequency bands in which the plurality of uplink carriers are located are different.
A network device, comprising: a receiving unit and a sending unit; wherein

The receiving unit is configured to: receive a first random access request sent by the terminal device on the first uplink carrier;

The sending unit is configured to: send, according to the first uplink carrier, a first random access response for the first random access request.
The network device according to claim 39, wherein the sending unit is further configured to:

Determining at least one of the following based on the first uplink carrier:

Transmitting, by the resource required by the first random access response, the first random access radio network temporary identifier RA-RNTI required to send the first random access response, and the first random access response Information indicating the source of the random access request;

And transmitting the first random access response according to the determined at least one.
The network device according to claim 40, wherein the resource required to send the first random response message comprises: a control resource set CORESET or a search space in which the control channel carrying the first random access response is located .
The network device according to claim 41, wherein the control resource set CORESET or search space in which the control channel carrying the first random access response is located is different from the control channel carrying the second random access response. a CORESET or search space; wherein the second random access response is for a second random access request on the second uplink carrier should.
The network device according to any one of claims 40 to 42, wherein the calculation formula of the first RA-RATI is different from the calculation formula of the second RA-RNTI, or the calculation formula of the first RA-RATI The middle part parameter is different from the partial parameter in the calculation formula of the second RA-RNTI; wherein the second RA-RNTI is a second random access response for the second random access request on the second uplink carrier The required RA-RNTI.
The network device according to any one of claims 40 to 43, wherein the information carried in the random access request source field of the first random access response is different from the randomness of the second random access response. Information carried in the access request source field; wherein the second random access response is a response to a second random access request on the second uplink carrier, the random access request source field indicating random access The uplink carrier where the request is located.
The network device according to any one of claims 40 to 43, wherein the first random access response carries a random access request source field, and the second random access response does not carry a random access request source field Wherein the second random access response is a response to a second random access request on a second uplink carrier, the random access request source field indicating an uplink carrier on which the random access request is located For the first uplink carrier.
The network device according to any one of claims 40 to 45, wherein the first uplink carrier is different from the frequency band in which the second uplink carrier is located.
The network device according to any one of claims 40 to 46, wherein the sending unit is further configured to: send configuration information to the terminal device, where the configuration information is used to indicate sending the first random Determining, by the resource required by the message, a determining manner or a partial parameter of the first random access radio network temporary identifier required to send the first random response message, and at least one of the information carried by the first random access response One.
A network device, comprising: a processing unit and a communication unit; wherein

The processing unit is configured to: determine, for each uplink carrier of the multiple uplink carriers, configuration information when performing random access, respectively;

The communication unit is configured to: send the configuration information for each of the uplink carriers to a terminal device.
The network device according to claim 48, wherein the configuration information comprises a time domain resource and/or a frequency domain resource used by the random access request on each uplink carrier;

The time domain resources used in transmitting the random access request on different uplink carriers and/or the RA-RNTI corresponding to the frequency domain resources are at least partially different.
The network device according to claim 48 or 49, characterized in that the configuration information when performing random access respectively determined for different uplink carriers is different in at least one of the following:

a sequence of time-frequency resources and/or random access requests occupied by the random access request;

a resource that sends a random response message;

A determination manner or a partial parameter of a random access wireless network temporary identifier that sends a random response message.
The network device according to claim 50, wherein the resource required to send the random response message comprises: a control resource set CORESET or a search space in which the control channel carrying the random access response is located.
The network device according to claim 51, wherein the control channel of the random access response corresponding to the random access request on the different uplink carriers is different in CORESET or search space.
The network device according to any one of claims 50 to 52, wherein the calculation formula of the RA-RNTI of the random access response corresponding to the random access request on different uplink carriers is different or the calculation formula is Some of the parameters are different.
The network device according to any one of claims 48 to 53, wherein the configuration information comprises a configuration of: a random access response corresponding to the random access request transmitted by each uplink carrier An indication of the source of the random access request.
The network device according to claim 54, wherein the random access request source field corresponding to the random access response corresponding to the random access request on the different uplink carriers carries different information; wherein the random information The Access Request Source field indicates the uplink carrier on which the random access request is located.
The network device according to claim 54, wherein the plurality of uplink carriers comprise a first uplink carrier and a second uplink carrier, and the first random access response carries a random access request source field The second random access response does not carry a random access request source field; wherein the first random access response is a response to a first random access request on the first uplink carrier, the second random The access response is a response to a second random access request on the second uplink carrier, the random access request source field indicating an uplink in which the random access request is located The path carrier is the first uplink carrier.
The network device according to any one of claims 48 to 56, characterized in that the frequency bands in which the plurality of uplink carriers are located are different.
A terminal device, comprising: a transmitting unit and a receiving unit; wherein

The sending unit is configured to: send, by using the first uplink carrier, a first random access request to the network device;

The receiving unit is configured to: acquire, according to the first uplink carrier, a first random access response that is sent by the network device for the first random access request.
The terminal device according to claim 58, wherein the receiving unit is further configured to:

Determining at least one of the following based on the first uplink carrier:

a resource occupied by the first random access response, a first random access radio network temporary identifier RA-RNTI of the first random access response, and a source of random access request in the first random access response Information for instructions;

And acquiring the first random access response according to the determined at least one.
The terminal device according to claim 59, wherein the resource occupied by the first random response message comprises: a CORESET or a search space in which a control channel carrying the first random access response is located.
The terminal device according to claim 60, wherein the control resource set CORESET or search space in which the control channel carrying the first random access response is located is different from the control channel carrying the second random access response. a CORESET or search space; wherein the second random access response is a response to a second random access request on the second uplink carrier.
The terminal device according to any one of claims 59 to 61, wherein the calculation formula of the first RA-RATI is different from the calculation formula of the second RA-RNTI, or the calculation formula of the first RA-RATI The middle part parameter is different from the partial parameter in the calculation formula of the second RA-RNTI; wherein the second RA-RNTI is a second random access response for the second random access request on the second uplink carrier The required RA-RNTI.
The terminal device according to any one of claims 59 to 62, wherein the information carried in the random access request source field of the first random access response is different from the randomness of the second random access response. Information carried in the access request source field; wherein the second random access The incoming response is a response to a second random access request on the second uplink carrier, the random access request source field indicating the uplink carrier on which the random access request is located.
The terminal device according to any one of claims 59 to 62, wherein the first random access response carries a random access request source field, and the second random access response does not carry a random access request source field Wherein the second random access response is a response to a second random access request on a second uplink carrier, the random access request source field indicating an uplink carrier on which the random access request is located For the first uplink carrier.
The terminal device according to any one of claims 59 to 64, wherein the first uplink carrier is different from a frequency band in which the second uplink carrier is located.
The terminal device according to any one of claims 59 to 65, wherein the terminal device further comprises:

The terminal device receives the configuration information sent by the network device, where the configuration information is used to indicate that the resource occupied by the first random access response is sent, and the first random access wireless network of the first random access response Temporarily identifying at least one of a determining manner or a partial parameter of the RA-RNTI and information carried by the first random access response.
A terminal device, comprising: a receiving unit and an access unit;

The receiving unit is configured to: receive configuration information when a network device performs random access on each uplink carrier of multiple uplink carriers;

The access unit is configured to perform random access on at least part of the uplink carriers of the multiple uplink carriers according to the configuration information.
The terminal device according to claim 67, wherein the configuration information comprises time domain resources and/or frequencies used for transmitting a random access request on each of the plurality of uplink carriers. Domain resources; among them,

The time domain resources used in transmitting the random access request on different uplink carriers and/or the RA-RNTI corresponding to the frequency domain resources are at least partially different.
The terminal device according to claim 67 or 68, characterized in that the configuration information when performing random access respectively determined for different uplink carriers is different in at least one of the following:

a sequence of time-frequency resources and/or random access requests occupied by the random access request;

a resource that sends a random response message;

Determining the method or part of the random access wireless network temporary identification by sending a random response message number.
The terminal device according to claim 69, wherein the resource required to send the random response message comprises: a CORESET or a search space in which a control channel carrying the random access response is located.
The terminal device according to claim 70, wherein the control resource set CORESET or the search space in which the control channel of the random access response corresponding to the random access request on the different uplink carriers is different.
The terminal device according to any one of claims 69 to 71, wherein the calculation formula of the RA-RNTI of the random access response corresponding to the random access request on different uplink carriers is different or the calculation formula is Some of the parameters are different.
The terminal device according to any one of claims 67 to 72, wherein the configuration information comprises a configuration of: a random access response corresponding to the random access request transmitted by each uplink carrier An indication of the source of the random access request.
The terminal device according to claim 73, wherein the random access request source field corresponding to the random access response corresponding to the random access request on the different uplink carriers carries different information; wherein the random information The Access Request Source field indicates the uplink carrier on which the random access request is located.
The terminal device according to claim 73, wherein the plurality of uplink carriers comprise a first uplink carrier and a second uplink carrier, and the first random access response carries a random access request source field The second random access response does not carry a random access request source field; wherein the first random access response is a response to a first random access request on the first uplink carrier, the second random The access response is a response to a second random access request on the second uplink carrier, the random access request source field indicating that the uplink carrier on which the random access request is located is the first uplink Carrier.
The terminal device according to any one of claims 67 to 75, characterized in that the frequency bands in which the plurality of uplink carriers are located are different.